It is recommended that, in order to get the appropriate factors, you draw:

• assembly loads less than 4.8 kPa (or important live loads) on a Live (Unreducible) layer
• assembly loads of 4.8 kPa or more, manufacturing, retail stores, garages, or footbridge on Live (Parking) layer
• storage areas, and equipment areas and service rooms referred to in Table 4.1.5.3 on Live (Storage) layer
• live loads other than those covered by clause 4.1.5.9 sentences 1) and 2) on a Live (Reducible) layer